
	Captchas:
		v1
			Not implemented.
			Replaced with v2.
		v2
			Used as fallback for v3/v4 and no-script clients.
		v3
			Intended as an automated system and browser engine capability checker.
			Will be optionally replaced with v4.
		v3.x <-- (current progress)
			Add libCaptcha.js+libWeb.js to simplify captcha integration.
			(EXPERIMENT) Avoid using Swing/AWT for text rendering + Use renderIt! (Pixmap or Marlin backend)
		v4
			PROPOSAL A
				Proof-of-work based captcha using WASM/JS.
			PROPOSAL B
				TLS based captcha using v2 and a HTTPS certificate to prove that a user is not a robot.
				Uses HASH(CERT_FINGERPRINT + UID + CAPTCHA_ANSWER)
			PROPOSAL C
				Automated system + CreepJS for a "high security mode"
			PROPOSAL D (WIP)
				Device sensor based captcha.
				Makes a user move their phone around to a "temperature" bar indicating how their phone should be positioned.
				Mobile only.
			PROPOSAL E
				Proof-of-work based captcha using WASM/JS with a v2 challenge included.
			PROPOSAL F (DONE: Implemented as screenwords2 and screenwords3)
				nCaptcha 1.0 captcha challenge, ported and improved, as a supplement to v2.
				
			ACCESSIBILITY OPTION 1
				Audio captcha providing 6-10 characters (either letters or numbers) spliced from samples that I have access to.
				
				Example: "	[low tone beep]	A 1 3 5 8 F E	[low tone beep]		"
				